Examples

File reading and writing

read_csv

# header= None 
dataSet = pd.read_csv('ex1data1.txt', header=None, names=['Population', 'Profit'])
dataSet.head()

drawing

DataFrame.plot

resources: https://blog.csdn.net/brucewong0516/article/details/80524442

dataSet.plot(kind='scatter', x='Population', y='Profit')
plt.show()